EP3402585A1 - Psa h2 avec modification du flux gazeux d'alimentation - Google Patents
Psa h2 avec modification du flux gazeux d'alimentationInfo
- Publication number
- EP3402585A1 EP3402585A1 EP16826386.1A EP16826386A EP3402585A1 EP 3402585 A1 EP3402585 A1 EP 3402585A1 EP 16826386 A EP16826386 A EP 16826386A EP 3402585 A1 EP3402585 A1 EP 3402585A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrogen
- gas
- psa
- methane
- mol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/16—Hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
- B01D2257/7025—Methane
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/046—Purification by cryogenic separation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/14—Details of the flowsheet
- C01B2203/146—At least two purification steps in series
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
- Y02P20/156—Methane [CH4]
Definitions
- More balancing means first more additional equipment to install. For example, to go from one cycle to two balancing steps to one cycle with four equalization stages, with equal adsorption time and purge time, it will be noted that it is generally necessary to install two adsorbers. additional, as well as a balancing gas manifold dedicated to the two new balancing steps, plus all the associated valves. This has the effect of already significantly increasing the investment cost of the PSA.
- a PSA H2 unit may have the manifolds and valves to perform 4 successive balancing but in practice only perform the equivalent of 3.4 or 3.7.
- Rinse Another family of solutions consists of removing the less adsorbable gases from the adsorber by introducing immediately after the feed gas, a gas rich in highly adsorbable constituents. The less adsorbable gases are then desorbed and pushed to the head end to thereby produce a complementary amount of these gases. This step is usually called "Rinse". It is commonly used in PSA whose main production is the most adsorbable component. By eliminating the lighter constituents from the adsorber, it makes it possible to obtain by decompression a fluid with a higher purity. The adsorbable gas used for this stage of Rinse is generally gas produced at low pressure. If this technique is used especially for PSA C02 and some PSA CO, variants have been proposed for PSA H2.
- the invention is more similar to the PSA methods implementing a Rinse step.
- Rinse is introduced at high pressure, for a PSA type PSA H2, once the adsorption step completed, a more adsorbable gas than the feed gas that will virtually drive out in totality inter and intra particulate hydrogen.
- an appreciable quantity of Rinse gas generally more than 30%, so that the impurities additional saturate for example half of the adsorbent.
- the main gas stream has a hydrogen content greater than 85 mol%, preferably greater than 90 mol%.
- the adsorber is filled with hydrogen at the end of the adsorption stage and increasing the charge gas can make it possible to recover an additional fraction of it at a good rate.
- the proposed solution is then to compare with recycling solutions of a portion of the waste or the use of a maximum of balancing steps. If one is looking for a limited gain on the hydrogen production rate or minimizing the investment, the solution proposed here may be the most advantageous.
- the secondary flow consists of more than 50 mol% of methane, preferably of more than 90 mol% of methane.
- Methane is a component that adsorbs moderately, that is to say that on activated carbon for example, it adsorbs less than CO 2 or ethane but more than carbon monoxide or nitrogen, these constituents being with water, the most classic impurities PSA H2 feeds. It is also reversibly adsorbed on most zeolites. The methane will be able to be adsorbed for example on the activated carbon without practically hindering the adsorption of CO 2 but by driving off the hydrogen. The gas phase is also depleted of hydrogen due to the presence of methane.
- cryogenic hydrogen-carbon monoxide separation unit comprises a methane washing.
- a source of CH4 available at a pressure at least equal to the pressure of the initial PSA feed gas, a source of which a small fraction is mixed with the PSA inlet feed gas in order to slightly increase in weight. methane the PSA H2 feed gas.
- the cryogenic separation unit H2 / CO comprises a methane wash.
- the mixture feeding the cold box namely essentially hydrogen and carbon monoxide also containing of the order of one or a few percent of the nitrogen and methane, is cooled and then injected at the bottom of a column fed with its head by a flow of liquid methane undercooled. Down the column, packed with trays or packing, methane liquefies CO, much of the nitrogen and methane from the feed.
- the head of the column is hydrogen containing the residual nitrogen and carbon monoxide and the amount of methane in equilibrium with the liquid phase which is at this level of almost pure methane.
- a PSA unit that produces hydrogen from a steam reformed synthesis gas whose composition is 73.5% H2, 0.5% N2, 3% CO, 6.5% CH4, 16 % CO2 at 25 bar and 40 ° C.
- the high pressure of the cycle is 25 bars.
- the low cycle pressure is 1.6 bar.
- the specifications of the top product are at least 99.9% H2 with a maximum of 100 ppm N2 and 10 ppm CO.
- the adsorber consists of 60% active carbon and 40% molecular sieve.
- the activated carbon bed is sized to stop CO 2, while the molecular sieve bed is sized to stop CO, N2 and CH4 not stopped on the activated carbon to the required specifications.
- this invention can be applied to any type of PSA H2, in particular to processes using N adsorbers or N groups of adsorbers, N being between 2 and 24, of which M are simultaneously in the adsorption phase, with M including interel and N-1 and comprising P equilibria, P being between 0 and 5.
- adsorber group means adsorbers working perfectly in parallel.
- four adsorbers can be used in parallel rather than using a double diameter adsorber.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1650261A FR3046550B1 (fr) | 2016-01-13 | 2016-01-13 | Psa h2 avec modification du flux gazeux d'alimentation |
| PCT/FR2016/053467 WO2017121933A1 (fr) | 2016-01-13 | 2016-12-15 | Psa h2 avec modification du flux gazeux d'alimentation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3402585A1 true EP3402585A1 (fr) | 2018-11-21 |
| EP3402585B1 EP3402585B1 (fr) | 2020-06-03 |
Family
ID=55806533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16826386.1A Active EP3402585B1 (fr) | 2016-01-13 | 2016-12-15 | Psa h2 avec modification du flux gazeux d'alimentation |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20180369739A1 (fr) |
| EP (1) | EP3402585B1 (fr) |
| KR (1) | KR20180100594A (fr) |
| CN (1) | CN108472573A (fr) |
| EA (1) | EA201891477A1 (fr) |
| FR (1) | FR3046550B1 (fr) |
| SG (1) | SG11201805853TA (fr) |
| WO (1) | WO2017121933A1 (fr) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171206A (en) * | 1978-08-21 | 1979-10-16 | Air Products And Chemicals, Inc. | Separation of multicomponent gas mixtures |
| US4836833A (en) * | 1988-02-17 | 1989-06-06 | Air Products And Chemicals, Inc. | Production and recovery of hydrogen and carbon monoxide |
| FR2788993B1 (fr) * | 1999-01-29 | 2001-02-23 | Air Liquide | Procede d'epuration d'un gaz par adsorption |
| CN1349841A (zh) * | 2000-10-19 | 2002-05-22 | 四川华泰投资有限责任公司 | 由甲醇合成工艺弛放气以变压吸附方式分离制取高纯度氢和二氧化碳的方法 |
| MXPA04005826A (es) * | 2001-12-18 | 2004-09-10 | Fluor Corp | Distribucion de adsorcion oscilante de presion (aop). |
| FR2836060B1 (fr) * | 2002-02-15 | 2004-11-19 | Air Liquide | Procede et unite de production d'hydrogene a partir d'un gaz de charge riche en hydrogene |
| US20100000408A1 (en) * | 2006-11-08 | 2010-01-07 | Sumitomo Seika Chemicals Co., Ltd. | Hydrogen gas separation method and separation apparatus |
| KR100896455B1 (ko) * | 2007-07-09 | 2009-05-14 | 한국에너지기술연구원 | 압력변동흡착장치 및 이를 이용한 수소 정제 방법 |
| US20090259323A1 (en) * | 2008-04-09 | 2009-10-15 | Partha Kesavan | Adsorption control method |
| US8557218B2 (en) * | 2011-05-12 | 2013-10-15 | Exxonmobil Research And Engineering Company | Hydrogen production with carbon capture |
-
2016
- 2016-01-13 FR FR1650261A patent/FR3046550B1/fr not_active Expired - Fee Related
- 2016-12-15 US US16/069,903 patent/US20180369739A1/en not_active Abandoned
- 2016-12-15 CN CN201680078158.8A patent/CN108472573A/zh not_active Withdrawn
- 2016-12-15 SG SG11201805853TA patent/SG11201805853TA/en unknown
- 2016-12-15 EA EA201891477A patent/EA201891477A1/ru unknown
- 2016-12-15 KR KR1020187021628A patent/KR20180100594A/ko not_active Withdrawn
- 2016-12-15 EP EP16826386.1A patent/EP3402585B1/fr active Active
- 2016-12-15 WO PCT/FR2016/053467 patent/WO2017121933A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP3402585B1 (fr) | 2020-06-03 |
| EA201891477A1 (ru) | 2018-11-30 |
| FR3046550B1 (fr) | 2020-02-21 |
| WO2017121933A1 (fr) | 2017-07-20 |
| KR20180100594A (ko) | 2018-09-11 |
| SG11201805853TA (en) | 2018-08-30 |
| FR3046550A1 (fr) | 2017-07-14 |
| CN108472573A (zh) | 2018-08-31 |
| US20180369739A1 (en) | 2018-12-27 |
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